A New York Times Bestseller

Take the Entrepreneurial Aptitude Test

HEART, SMARTS, GUTS, and LUCK (HSGL) incorporates the results of the first ever Entrepreneurial Aptitude Test (E.A.T), a simple tool drawing on hundreds of surveys and interviews with business-builders around the globe. It's core finding is that business success and decision-making is driven by the four traits of the book's title – one's Heart, Smarts, Guts, and Luck. Understanding which of these traits dominates your personality and decision-making is critical for long-term success.

“A book by authors who care and know about the business–building journey because of their first–hand experiences and analytical acumen. ”

ram charan, Business Consultant and Bestselling Author

“Wisdom—some of it shockingly counter–intuitive—from la cr&grave;me de la cr&grave;me of successful people from all walks of business and life, told not only in parable but with data and directness. The E.A.T survey tells a timeless truth: that knowing oneself is fundamental to thriving.”

patrick chung, Partner, NEA

“The book provides the self–awareness and tools a leader needs at every stage of their business from founding to scaling and beyond.”

beth comstock, Chief Marketing Officer, GE

“Great, really great... not just for business people, but for anyone trying to make better decisions and better manage relationships.”

“Tjan, Harrington and Hsieh have nailed it. Building great companies takes a powerful cocktail of Heart, Smarts, Guts, and Luck. HSGL is filled to the brim with the lessons of innumerable successful entrepreneurs and the traits that helped them deliver on that success. Would–be entrepreneurs would be well served to give HSGL a careful read and measure themselves up on the heart, smarts, guts and luck scale.”

“Profoundly insightful. Transparent, gritty business advice from the entrepreneurs themselves and their inside stories. The Entrepreneurial Aptitude Test will change the way you understand yourself, your strengths, and how you work forever.”

david kidder, CEO, Clickable

“Refreshingly human. Gets at the core of what it takes to build a successful entrepreneurial venture.”

david lawee, Vice President of Corporate Development, Google

“It's a rare treat to be able to learn directly from leaders who are so extraordinarily accomplished across multiple parts of the business world—Hearts, Smarts, Guts & Luck is easy to relate to and relevant for any new or experienced entrepreneur.”

joe lonsdale, Founder of Palantir, Addepar, & Formation 8

“Heart, Smarts, Guts and Luck are crucial not just for those who start a business, but must also be in the DNA of everyone who wants to succeed in a transnational, high growth company.”

sunil mittal, Chairman & Group CEO, Bharti Enterprises

“The authors have a rare combination of entrepreneurial and operating backgrounds, together with the experience of partnering with founders in a venture capital context. They have collected a perspective on what makes a successful entrepreneur that everyone should enjoy and benefit from.”

henry mccance, Chairman Emeritus, Greylock Partners

“HSGL is a book full of lessons that every entrepreneur should absorb and apply&ellipsis;you will learn both the science, art and the stories to help create both a successful business and life.”

jeff rosenthal, Co–founder Summit Series

“It's a rare treat to be able to learn directly from leaders who are so extraordinarily accomplished across multiple parts of the business world—Hearts, Smarts, Guts & Luck is easy to relate to and relevant for any new or experienced entrepreneur.”

joe lonsdale, Founder of Palantir, Addepar, & Formation 8

“An entertaining and informative ‘wisdom collector’ that sheds light on the many paths to entrepreneurial success. Every entrepreneur can benefit from studying what others have learned from the ‘thrill of victory and the agony of defeat.‘”

william sahlman, Professor of Business Administration, Harvard Business School

“Finally, a book that investors like us can use with portfolio companies to engage them on their opportunity and challenges in growing businesses. Highly recommended.”